Question 2: my code is:
WHERE birthday BETWEEN 1980 AND 1989;
This code works fine but now I see in the Hint that they used this code:
SELECT email, birthday
WHERE birthday BETWEEN ‘1980-01-01’ AND ‘1989-12-31’;
This also works and it is stated that you should go for the second option because in the Table, birthday actually needs a TEXT insert. But what is the difference in the end? as my method works fine. Thanks in advance.